Question

What is the measure of ∠E?

Answer 1

45°

Explanation:

DF = EF

Angle F = 90°

Angle E = Angle F

Let Angle E and Angle F be x

x + x + 90° = 180° (Angle Sum Property)

2x + 90 = 180

2x = 180 - 90

2x = 90

x = 90/2

x = 45°